Selector precedence between style name and style name with namespace
<?xml version="1.0"?> <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"> <mx:Style> @namespace mx "http://www.adobe.com/2006/mxml"; .myclass { color: Red; } mx|Button { fontSize: 10pt; color: Yellow; } </mx:Style> <mx:VBox width="500" height="200"> <mx:Button styleName="myclass" label="I am red"/> <mx:Button label="I am yellow"/> </mx:VBox> </mx:Application>